Hello Everyone, I recently had this problem with my Tiguan which was: P0234 - Turbocharger/Supercharger "A" Overboost Condition - Stored (Mode 03) - 0x7e8 My check engine light was ON. Vehicle was not having power at all, i could only drive 0 to 110 KM/H at 1000 to 2500 engine RPM...